# Select category of a level **URL:** \ **Category:** Revit\ **Tags:** dynamo\ **Created:** [March 21, 2022, 2:57am UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581 "2022-03-21T02:57:13Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![metalrule](https://avatars.discourse-cdn.com/v4/letter/m/ea5d25/32.png) [@metalrule](https://forum.dynamobim.com/u/metalrule)\ **Post date:** [March 21, 2022, 2:57am UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/1 "2022-03-21T02:57:13Z")
Hi everyone I’m green… 😂 this Dynamo can output all level of tag in 3D text and now I just need to one of level how to it ?plz help, thanks ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/2/7/2720d17df23b184a48520eceb1ba562f68272fe5.png) ---
**Author:** ![metalrule](https://avatars.discourse-cdn.com/v4/letter/m/ea5d25/32.png) [@metalrule](https://forum.dynamobim.com/u/metalrule)\ **Post date:** [March 21, 2022, 2:58am UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/2 "2022-03-21T02:58:27Z")
I try some method but still not working ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/8/f/8ff9e9c4cdf9f48afa6d03c35d36ff40b6657954.png) ---
**Author:** ![Draxl\_Andreas](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/draxl_andreas/32/145744_2.png) [@Draxl\_Andreas](https://forum.dynamobim.com/u/Draxl_Andreas)\ **Post date:** [March 22, 2022, 3:35pm UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/3 "2022-03-22T15:35:15Z")
![2022-03-22_16h34_38](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/d/7/d71d37728429e87c94a988fccd241364d0259bcd.png) ![2022-03-22_16h40_06](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/1/3/136791352cffe38ea9267198a5bebb96af2f8555.png) you are looking for that? check that you select the right level KR Andreas ---
**Author:** ![Elie.Trad](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/elie.trad/32/110373_2.png) [@Elie.Trad](https://forum.dynamobim.com/u/Elie.Trad)\ **Post date:** [March 22, 2022, 4:06pm UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/4 "2022-03-22T16:06:04Z")
Hi @metalrule and welcome, you need to filter the rooms by the desired level, one of the ways to know the hosting level of a room is this: ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/2/e/2ed84b0d3932b88a8088a5dd4142541c0c7b86a8.png) ---
**Author:** ![bvs1982](https://avatars.discourse-cdn.com/v4/letter/b/43a26b/32.png) [@bvs1982](https://forum.dynamobim.com/u/bvs1982)\ **Post date:** [March 22, 2022, 4:17pm UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/5 "2022-03-22T16:17:10Z")
Group.ByKey? ---
**Author:** ![Draxl\_Andreas](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/draxl_andreas/32/145744_2.png) [@Draxl\_Andreas](https://forum.dynamobim.com/u/Draxl_Andreas)\ **Post date:** [March 22, 2022, 5:01pm UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/6 "2022-03-22T17:01:02Z")
For what i need `Group.ByKey` ? ![2022-03-22_18h00_28](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/e/c/ec00d46d0c7bdfe479ae1a652fdda4e03799f749.png) ---
**Author:** ![bvs1982](https://avatars.discourse-cdn.com/v4/letter/b/43a26b/32.png) [@bvs1982](https://forum.dynamobim.com/u/bvs1982)\ **Post date:** [March 22, 2022, 7:13pm UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/7 "2022-03-22T19:13:14Z")
Was more to say that there are more ways to ‘filter’ things. ---
**Author:** ![Draxl\_Andreas](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.dynamobim.com/draxl_andreas/32/145744_2.png) [@Draxl\_Andreas](https://forum.dynamobim.com/u/Draxl_Andreas)\ **Post date:** [March 23, 2022, 7:28am UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/8 "2022-03-23T07:28:49Z")
![2022-03-23_08h28_32](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/0/4/04362f1c3547d8248d9918c4a37017a50492910d.png) ---
**Author:** ![metalrule](https://avatars.discourse-cdn.com/v4/letter/m/ea5d25/32.png) [@metalrule](https://forum.dynamobim.com/u/metalrule)\ **Post date:** [March 29, 2022, 12:30am UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/9 "2022-03-29T00:30:42Z")
I think that’t what I mean, select element by level then select the category that I want thank you Andreas I need to more pratice about **list.filterbyboolmask** and **code block** ---
**Author:** ![metalrule](https://avatars.discourse-cdn.com/v4/letter/m/ea5d25/32.png) [@metalrule](https://forum.dynamobim.com/u/metalrule)\ **Post date:** [March 29, 2022, 12:38am UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/10 "2022-03-29T00:38:11Z")
Thank you tradelie this’s soultion is very beautiful I like it and its usefull ---
**Author:** ![metalrule](https://avatars.discourse-cdn.com/v4/letter/m/ea5d25/32.png) [@metalrule](https://forum.dynamobim.com/u/metalrule)\ **Post date:** [March 29, 2022, 12:42am UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/11 "2022-03-29T00:42:29Z")
It make 2 group,not my type but I can save it for some time I think It can inspire me some thing ---
**Author:** ![metalrule](https://avatars.discourse-cdn.com/v4/letter/m/ea5d25/32.png) [@metalrule](https://forum.dynamobim.com/u/metalrule)\ **Post date:** [March 29, 2022, 12:48am UTC](https://forum.dynamobim.com/t/select-category-of-a-level/74581/12 "2022-03-29T00:48:21Z")
some web in time,I find another one I’ts usefull too ![image](https://us1.discourse-cdn.com/flex022/uploads/dynamobim/original/3X/9/1/91c6fda326949690a11d4ee83ab9449ab0cabe88.jpeg) and share for everyone who help me